Hvac Controls And Systems

In the eight years since the publication of the first edition of this book, there have been quantum changes in the automated temperature control (ATC) industry due to the widespread & growing use of direct digital control (DDC) systems. The fully updated second edition fully addresses these technology changes, from equipment characteristics & operation, to troubleshooting & maintenance, to training of operating & maintenance personnel. The full range of topics pertinent to the effective operation of all types of HVAC control systems currently in use today are explored, including equipment-to-control interactions, control system set-up & functions, local loop to building automation system interfaces, performance prediction & assessment, operational parameters, & maintenance & testing.

Annotation This book provides a thorough introduction and a practical guide to the principles and characteristics of controls, and how to apply them in the use, selection, specification and design of control systems.

Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. This book presents engineers with solutions to the problems found in control applications in the commercial HVAC buildings industry. Using their experience to take readers beyond textbook principles, the authors offer suggestions for troubleshooting not found in any other book. Divided into two sections, HVAC Controls and Systems covers all aspects of commercial controls, including pneumatic, electric, and electronic controls. The first section discusses the hardware of the controls industry: thermostats and humidistats, dampers and damper motors, automatic valves, transmitters, auxiliary devices, construction systems and devices, and electronic products. The second section covers applications of the hardware for air handling unit systems, terminal systems and units, primary systems, heat pump cycles, distribution systems, supervisory systems, maintenance and operations, and total facility approach.

HVAC Control System Design Diagrams. The Complete Engineer's Solutions Manual. This complete "cookbook" of generic segments and sequences is a most useful reference for designers or specifiers of HVAC control systems. this indispensable book not only gives you a broad array of diagrams but also: PROVIDES everything you need to design controls for an in-place or in-plan HVAC system. OFFERS ready-to-go details for retrofitting, updating, or designing controls for altered systems. ALLOWs clear comparisons among commercial control systems. SHOWS frequently made and useful modifications to controls. DEMONSTRATES how to create controls for peak efficiency, air quality, and energy conservation. COVERS air-handling, terminal, and primary systems. OFFERS sequences and segments for virtually any HVAC system. SHOWS you how standard control algorithms work in particular systems. These hghly useful control diagrams, many of them comparable to commercially available models, let you design or specify needed configurations in the most efficient manner possible. Written by an experienced HVAC control engineer, it's in full compliance with ASHRAE standards and covers both hardware and software applications. This unique volume fills a definite need and should be a part of every HVAC engineer's design library.

Since the publication of the first edition in 1992, the HVAC industry has gone through enormous changes. As simple digital systems have given way to more complex systems, demand for information on how these systems operate, how they are best applied and how they communicate with other building control systems has grown rapidly. Direct Digital Control for Building Systems, Second Edition is thoroughly updated and expanded to include coverage of the architecture of modern digital control systems, distributed intelligence networked systems, communication protocols, the technologies and issues concerning interoperability, the latest application strategies, and defensive techniques for designing and specifying control systems. Numerous illustrations throughout help keep the subject highly accessible, and hardware, software, and systems applications are described in the most universal terms possible. This thoroughly revised second edition also contains a full section on BACnet® standard and Echelon's LonWorks® technology; their meaning, applications, and future implications. An up-to-date appendix is provided. Insights on emerging technologies in intelligent control systems and what the future holds for this dynamic field is covered throughout.

Provided by this book is the fundamental knowledge practitioners need to understand controls and become fully proficient. It provides the vocabulary, the diagrams, the principles and the philosophy that will give confidence to anyone entering the field of HVAC controls. After a general treatment of the object of the HVAC systems and the philosophy of how and why complete systems are designed, the book turns to describing specific kinds of hardware and gives thorough coverage of troubleshooting, potential problems to look for and how to prevent or solve them. This edition incorporates information on microcomputers and microprocessor-based controls, which are now making a major impact on the way controls are perceived and marketed.